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Originally posted by finnegan
Matter which moves at the speed of light becomes energy
m = the mass you would have if the energy was converted to mass(comes to rest) = E/c^2
E = energy of the photon, which could be anything along a spectrum, from your example E = 4 x 10^-19 kg (m/s)^2
so the mass of this photon would be 4.45 x 10^-36 kg if it came to rest
The energy of the bullet can be determined according to its mass at rest, just multiply it by c^2
Originally posted by eagledriver
Actually a Photon has no measurable weight, but you can be sure that each photon is the outer bounds of a universe all of its own. And something that would give you chills. Our universe is just a photon inside another universe. As humans, we can't comprehend this.
Originally posted by stander
Black holes are extremely dense objects surrounded by such a strong gravitational field that even light cannot escape the radius of influence. But since light is a part of EMR propagated by photons, which are particles with no mass, light should escape the firm gravitational grip of black holes.